Engine - Stumble or Stall At Low Speeds

88ford15

^ HESITATION - 3.0L - DURING LOW SPEED DRIVING


^ STALL - 3.0L - DURING LOW SPEED DRIVING

Article No. 88-14-15

LIGHT TRUCK: 1986-87 AEROSTAR


ISSUE: An intermittent stumble or stall while driving at low speeds up to 8 mph (13 km/h) may be caused by the EEC IV processor shutting off the fuel injector system. The EEC IV processor may incorrectly read sensor input signals and interpret them to indicate a vehicle speed that triggers a shut down of the fuel injector system.

ACTION: To correct this, install a new level EEC IV processor. Refer to the following EEC IV processor application chart for the correct service replacement part number.

New EEC IV Processor Transmission

E7PZ-12A650-EA Automatic

E7PZ-12A650-FA Manual




Obtain an Authorized Modification Decal and list the date, dealer number, and summary of alterations performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modification Decal. Clean the area, install the decal and cover it with a clear plastic decal shield.

PART NUMBER PART NAME CLASS

E7PZ-12A650-EA EEC IV Processor B
E7PZ-12A650-FA EEC IV Processor B

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Eligible Under Basic Warranty Coverage
OPERATION: 881415A
TIME: 1.1 Hrs. - Includes quick test and re-test
DLR. CODING: Basic Part No. DRIVE
Condition Code: 53